We can win a cnc laser cutter by doing a project using light. 2 things come to mind that I've been wanting to do. 1) Steven and I have discussed creating a computer using light (and prisms and mirrors) by mimicking the behavior of transistors. Instead of electrons flowing, photons would be flowing. 2) a digital light spectrograph using diffraction film and a cmos imaging sensor to digitize the light spectrum. Is there any interest in here for these projects or contest? Do you have any "light" project ideas?

After seeing this cool post from hackaday regarding creating a "camera" using leds instead of a cmos sensor( http://feedproxy.google.com/~r/hackaday ... MrW0xco8E/) , I remembered an idea I had a few years ago: using a monitor as a "camera" for "spying" or possibly even video conferencing (without additional equipment.) Would anyone be willing to work on this with me for this contest?